1、Designation: B 227 04Standard Specification forHard-Drawn Copper-Clad Steel Wire1This standard is issued under the fixed designation B 227; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in pare
2、ntheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope1.1 This specification covers bare hard-drawn round copper-clad steel w
3、ire for electrical purposes (Note 1).NOTE 1Wire ordered to this specification is not intended for redraw-ing. If wire is desired for this purpose, consult the manufacturer.1.2 Four grades of wire are specified, designated as follows(Note 2): Grade 40 HS, Grade 40 EHS, Grade 30 HS, andGrade 30 EHS.NO
4、TE 2The grades covered by this specification correspond to thefollowing commercial designations:Grade 40 HS, High Strength, 40 % Conductivity.Grade 40 EHS, Extra High Strength, 40 % ConductivityGrade 30 HS, High Strength, 30 % Conductivity.Grade 30 EHS, Extra High Strength, 30 % Conductivity.1.3 The
5、 values stated in inch-pound units are to be regardedas the standard. The values given in parentheses are in SI units.2. Referenced Documents2.1 The following documents of the issue in effect on dateof material purchase form a part of this specification to theextent referenced herein.2.2 ASTM Standa
6、rds:2B 193 Test Method for Resistivity of Electrical ConductorMaterialsB 258 Specification for Standard Nominal Diameters andCross-Sectional Areas of AWG Sizes of Solid Round WiresUsed as Electrical Conductors2.3 National Institute of Standards and Technology:NBS Handbook 100Copper Wire Tables33. Or
7、dering Information3.1 Orders for material under this specification shall includethe following information:3.1.1 Quantity of each size and grade,3.1.2 Wire size: diameter in inches (see 5.1 and Table 1),3.1.3 Grade (see 1.2 and Table 1),3.1.4 Method of measuring elongation (see 7.3 and 7.4),3.1.5 Pac
8、kage size (see 14.1),3.1.6 Special package marking, if required (Section 13), and3.1.7 Place of inspection (Section 15).4. Material4.1 The wire shall be composed of a steel core with asubstantially uniform and continuous copper cladding thor-oughly bonded to it throughout.4.2 The finished copper-cla
9、d steel wire shall conform to therequirements prescribed in this specification.5. Dimensions and Permissible Variations5.1 The size shall be expressed as the diameter of the wirein decimal fractions of an inch using four places of decimals,that is, in tenths of mils (Note 3).NOTE 3The values of wire
10、 diameters in Table 1 are given to thenearest 0.0001 in. and correspond to the standard sizes given in Specifi-cation B 258. In specifying diameters of wire or in inspecting wire,express the diameter to the fourth decimal place. The diameters precededby asterisks are not in the American Wire Gage se
11、ries and are also givento four places of decimals. They correspond to certain numbers of theBirmingham Wire Gage of the British Standard Wire Gage and are usedfor communication lines. The use of gage numbers in specifying wire sizesis not recognized in these specifications because of the possibility
12、 ofconfusion. An excellent discussion of wire gages and related subjects iscontained in NBS Handbook 100 of the National Institute of Standards andTechnology.31This specification is under the jurisdiction of the ASTM Committee B01 onElectrical Conductors and is the direct responsibility of Subcommit
13、tee B01.06 onComposite Conductors.Current edition approved April 1, 2004. Published April 2004. Originallyapproved in 1948. Last previous edition approved in 2003 as B 227 03.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For
14、 Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from National Institute of Standards and Technology (NIST), 100Bureau Dr., Stop 3460, Gaithersburg, MD 20899-3460.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box
15、C700, West Conshohocken, PA 19428-2959, United States.5.2 Within the range of diameters included in Table 1, thewire shall not vary from the specified diameter by more thanthe following amounts rounded off to the nearest 0.1 mil(0.0001 in.):Specified Diameter,in. (mm)Permissible Variations in Specif
16、iedDiameter0.2043 (5.189) to 0.1000 (2.540), incl 61.5 %0.0999 (2.537) to 0.0800 (2.032), incl 60.0015 in. (1.5 mils) (0.038 mm)0.0799 (2.029) to 0.0600 (1.524), incl +0.0010 in. (1.0 mils) (0.025 mm)0.0015 in. (1.5 mils) (0.038 mm)0.0599 (1.521) and under 60.0010 in. (1.0 mils) (0.025 mm)5.3 Ten pe
17、rcent, but not less than five coils or spools (or allif the lot is less than five) from any lot of wire, shall be gagedat three places. If accessible, one gaging shall be taken neareach end and one near the middle. If any of the selected coilsor spools fail to conform to the requirements for diamete
18、r asprescribed in 5.2, all coils or spools shall be gaged in themanner specified.6. Workmanship, Finish, and Appearance6.1 The surface of the wire shall be smooth and free fromimperfections not consistent with good commercial practice.7. Tensile Properties7.1 The wire shall conform to the tensile re
19、quirementsprescribed in Table 1 (Note 4).NOTE 4The approximate properties of hard-drawn copper-clad steelwire are shown in Table 2 for the information of the user of thisspecification.TABLE 1 Tensile RequirementsNominal Diameter,in.Area at 20C Tensile Strength, min, psiAcmil in.2,AGrade 40HSGrade 40
20、EHSGrade 30HSGrade 30EHS0.2043 41 740 0.03278 108 000 . . . 120 000 142 5000.1819 33 090 0.02599 113 000 . . . 125 000 150 5000.1650B27 230 0.02138 118 000 . . . 130 000 157 5000.1620 26 240 0.02061 118 000 . . . 130 000 157 5000.1443 20 820 0.01635 123 000 . . . 135 000 164 0000.1285 16 510 0.01297
21、 128 000 . . . 140 000 170 0000.1280B16 380 0.01287 128 000 . . . 140 000 170 0000.1144 13 090 0.01028 133 000 . . . 145 000 174 1000.1040B10 820 0.008495 138 600 156 000 151 000 175 0000.1019 10 380 0.008155 138 600 . . . 151 000 179 0000.0808 6 530 0.005129 115 000 . . . 120 000 179 0000.0800B6 40
22、0 0.005027 115 000 . . . 120 000 179 0000.0640B4 096 0.003217 125 000 . . . 130 000 179 0000.0403 1 624 0.001276 130 000 . . . 135 000 179 0000.0390B1 521 0.001195 130 000 . . . 135 000 179 0000.0320 1 024 0.000804 135 000 161 000 145 000 179 000AMetric equivalents: 1 in. = 25.4 mm (round to four si
23、gnificant figures); 1 in.2= 645.16 mm2(round to four significant figures); 1 psi = 6.9 kPa (round to significant figureof U.S. customary units).BThese diameters are often employed by purchasers for communication lines but are not in the American Wire Gage (B copper electricalconductor-copper-clad st
24、eel; copper-clad steel electrical con-ductor; electrical conductor; hard drawn copper-clad steel wire;steel wire-copper-cladASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are exp
25、ressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revis
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27、 attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).B227044
